disarticulate vs disjoint

disarticulate

verb
  • To disjoint. 

  • To amputate (a limb) at a joint without cutting the bone. 

disjoint

verb
  • To break the natural order and relations of; to make incoherent. 

  • To render disjoint; to remove a connection, linkage, or intersection. 

adj
  • Of two or more sets, having no members in common; having an intersection equal to the empty set. 

  • Not smooth or continuous; disjointed. 

How often have the words disarticulate and disjoint occurred in a corpus of books? (source: Google Ngram Viewer )